package lwk.thread.lock;

/**
 * @author:lwk
 * @create: 2022-08-08 21:05
 * @Description: 测试故生产者消费者问题2:信号灯法，标志位
 */
public class TestPC2 {
    public static void main(String[] args) {
        TV tv = new TV();
        new Player(tv).start();
        new Watcher(tv).start();

    }
}

// 生产者--->演员
class Player extends Thread {
    TV tv;
    public Player(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            if (i%2==0) {
                this.tv.play("快乐大本营~~========"+i);
            } else {
                this.tv.play("抖音~~====="+i);
            }
        }
    }
}

// 消费者--->观众
class Watcher extends Thread {
    TV tv;
    public Watcher(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            this.tv.watch();
        }
    }

}

// 产品--->节目
class TV {

    // 演员表演的时候，观众等待
    // 观众观看的时候，演员等待

    String voice; // 表演的节目
    boolean flag = true;

    //表演
    public synchronized void play(String voice) {
        if (!flag) {
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("演员表演了："+voice);
        //通知观众观看
        this.notifyAll();
        this.voice = voice;
        this.flag = !this.flag;
    }


    //观看
    public synchronized void  watch() {
        if (flag) {
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观看了"+voice);

        // 通知演员表演
        this.notifyAll();
        this.flag = !this.flag;

    }

}